EP2832561B1 - Système de détection de charge de pneu d'un véhicule - Google Patents

Système de détection de charge de pneu d'un véhicule Download PDF

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Publication number
EP2832561B1
EP2832561B1 EP14170607.7A EP14170607A EP2832561B1 EP 2832561 B1 EP2832561 B1 EP 2832561B1 EP 14170607 A EP14170607 A EP 14170607A EP 2832561 B1 EP2832561 B1 EP 2832561B1
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EP
European Patent Office
Prior art keywords
tire
distance
sensing system
sensor
load sensing
Prior art date
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Active
Application number
EP14170607.7A
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German (de)
English (en)
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EP2832561A1 (fr
Inventor
Steven A Duppong
Bruce L Upchurch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
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Deere and Co
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Publication date
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Publication of EP2832561A1 publication Critical patent/EP2832561A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
    • B60C23/067—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle by monitoring chassis to ground distance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/08—Agricultural vehicles
    • B60G2300/082—Tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/25—Stroke; Height; Displacement
    • B60G2400/252—Stroke; Height; Displacement vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/80—Exterior conditions
    • B60G2400/82—Ground surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60G2401/17—Magnetic/Electromagnetic
    • B60G2401/176—Radio or audio sensitive means, e.g. Ultrasonic

Definitions

  • the present invention relates to a tire load sensing system of a vehicle, in particular an agricultural tractor, the tire load sensing system comprising at least one distance sensor mounted on the vehicle adjacent to a corresponding tire, the at leat one distance sensor providing raw distance data representing a distance from the at least one distance sensor to a surface; and an electronic control unit which receives the raw distance data, the electronic control unit determining a filtered distance value for the corresponding tire and calculating a tire deflection value from the filtered distance value.
  • a header height control system for an agricultural harvester is known in which tire load is detected by means of a non-contact sensor such as a radar or laser sensor.
  • the radar or laser sensor is located adjacent to the front tires of the agricultural harvester for detecting a distance to the ground underneath the front tires which allows to determine the degree of compression and thus tire load.
  • GB 2 450 377 A1 and US 2011/248861 A1 show further tire load sensing systems using distance sensors.
  • US 6 449 582 B1 and JP 2006 010593 A describe tire load sensing systems based on tire pressure detection and tire rolling noise analysis, respectively.
  • Such information could be used, for example, as an input for a tire inflation system automatically changing the tire pressure to respond to axle load conditions of the agricultural tractor, to determine the amount of weight that has been picked up by a front loader attached to the agricultural tractor, or to determine axle load conditions on a trailer coupled to the agricultural tractor.
  • a tire load sensing system of a vehicle in particular an agricultural tractor, is provided.
  • the tire load sensing system comprises at least one distance sensor mounted on the vehicle adjacent to a corresponding tire, the at leat one distance sensor providing raw distance data representing a distance from the at least one distance sensor to a surface.
  • At least one pressure sensor provides tire pressure data representing a tire pressure for the corresponding tire.
  • An electronic control unit receives the raw distance data and the tire pressure data, the electronic control unit determining a filtered distance value for the corresponding tire, calculating a tire deflection value from the filtered distance value, and determining a tire load value by entering the calculated tire deflection value into a stored look-up table containing tire deflection values at known tire pressures obtained from tire pressure data.
  • a vehicle in the form of an agricultural tractor 10 is shown.
  • the agricultural tractor 10 has fully inflated left front and rear tires 12a and 14a which rest on a surface 16.
  • a left front distance sensor 18a is mounted on the agricultural tractor 10 near to the left front tire 12a and at a distance A1 above the surface 16.
  • a left rear distance sensor 20a is mounted on the agricultural tractor 10 near to the left rear tire 14a and at a distance B1 above the surface 16.
  • Fig. 2 is similar to Fig. 1 , except that right front and rear tires 12b and 14b are partially deflated so that right front distance sensor 18b is at a smaller distance A2 ⁇ A1 above the surface 16, and right rear distance sensor 20b is at a smaller distance B2 ⁇ B1 above the surface 16.
  • the distance sensors 18a, 18b, 20a, and 20b are preferably conventional ultrasonic distance sensors, and they are mounted to a chassis of the agricultural tractor 10 so that the field of view of each distance sensor 18a, 18b, 20a, or 20b is looking behind the corresponding tire 12a, 12b, 14a, or 14b with respect to the normal forward travel direction of the agricultural tractor 10.
  • the distance sensors 18a, 18b, 20a, and 20b will sense the distance to the compressed track that is left in the soil when driving on an agricultural field during normal forward travel. This provides a consistent target surface in relationship to the axles of the agricultural tractor 10.
  • the distance sensors 18a, 18b, 20a, and 20b are part of a tire load sensing system of the agricultural tractor 10, which will be described below in more detail.
  • the distance sensors 18a, 18b, 20a, and 20b could be placed inside the tires 12a, 12b, 14a, and 14b on the rims and measure the deflection from the inside of the tires 12a, 12b, 14a, and 14b and transmit the associated raw distance data to the tire load sensing system via a wireless data link.
  • the distance sensors 18a, 18b, 20a, and 20b could also be mounted to the axles of the agricultural tractor 10 in order to detect subtle changes in the distance from the axles to the surface 16 based on tire pressure.
  • the tire load sensing system includes left and right front distance sensors 18a and 18b, and left and right rear distance sensors 20a and 20b.
  • the distance sensors 18a, 18b, 20a and 20b are preferably commercially available ultrasonic distance sensors.
  • Pressure sensors 22a, 22b, 22c, and 22d sense the tire pressure of each of the corresponding tires 12a, 12b, 14a, and 14b.
  • a temperature sensor 24 senses the ambient temperature and is preferably located on the chassis of the agricultural tractor 10. The sensed ambient temperature is used to compensate the raw distance data from distance sensors 18a, 18b, 20a, and 20b to compensate ultrasonic runtime deviations.
  • An electronic control unit (ECU) 30 is connected to receive data in the form of associated sensor signals from the distance sensors 18a, 18b, 20a, and 20b, the pressure sensors 22a, 22b, 22c, and 22d, and the temperature sensor 24.
  • the ECU 30 processes the sensor signals and calculates a tire load value by executing an algorithm 100 represented by the flow chart of Fig. 4 .
  • the tire load value is displayed on a conventional display 32 in an operator station (not shown) on the agricultural tractor 10.
  • the conversion of the flow chart into a standard language for implementing the algorithm in a microprocessor will be evident to one with ordinary skill in the art.
  • the execution of the algorithm comprises the following steps as shown in the flow chart of Fig. 4 :
  • step 104 the ECU 30 reads tire pressure data of the tire pressure sensors 22a, 22b, 22c, and 22d, and temperature data of the temperature sensor 24.
  • step 106 the ECU 30 compensates the raw distance data based on the temperature data.
  • step 108 the compensated distance data is filtered by the ECU 30 using a running average method for obtaining filtered distance values for each of the distance sensors 18a, 18b, 20a, and 20b.
  • step 110 an offset value based on the location of the distance sensors 18a, 18b, 20a, and 20b on the chassis of the agricultural tractor 10 is subtracted from the filtered distance values to obtain tire deflection values for each tire 12a, 12b, 14a, and 14b.
  • step 112 tire load values are determined for each tire 12a, 12b, 14a, and 14b by entering the calculated tire deflection values into a stored look-up table containing tire deflection values at known tire pressures obtained from tire pressure data, based on information published by tire manufacturers.
  • a stored look-up table containing tire deflection values at known tire pressures obtained from tire pressure data, based on information published by tire manufacturers.
  • An example of such a table is illustrated by Fig. 5 .
  • the ECU 30 may also, in response to changes in the determined tire load values, generate tire pressure adjustment signals which could be used by a tire inflation system (not shown) to automatically adjust the tire pressures to desired values.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measuring Fluid Pressure (AREA)
  • Tires In General (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Claims (3)

  1. Système de détection de charge d'un pneu d'un véhicule, en particulier pour un tracteur agricole, le système de détection de charge de pneu comprenant au moins un capteur de distance (18a, 18b, 20a, 20b) monté sur le véhicule (10) en position adjacente à un pneu correspondant (12a, 12b, 14a, 14b), l'au moins un capteur de distance (18a, 18b, 20a, 20b) fournissant des données de distance brutes représentant une distance de l'au moins un capteur de distance (18a, 18b, 20a, 20b) jusqu'à une surface (16) ; et une unité de commande électronique (30) qui reçoit les données de distance brutes, l'unité de commande électronique (30) déterminant une valeur de distance filtrée pour le pneu correspondant (12a, 12b, 14a, 14b) et calculant une valeur d'écart du pneu par rapport à la valeur de distance filtrée, caractérisé en ce qu'il comprend en outre au moins un capteur de pression (22a, 22b, 22c, 22d), l'au moins un capteur de pression (22a, 22b, 22c, 22d) fournissant des données de pression de pneu représentant une pression de pneu pour le pneu correspondant (12a, 12b, 14a, 14b), l'unité de commande électronique (30) recevant les données de pression de pneu et déterminant une valeur de charge de pneu en saisissant la valeur d'écart du pneu calculée dans une table à consulter mémorisée contenant des valeurs d'écart du pneu à des pressions de pneu connues obtenues à partir de données de pression de pneu.
  2. Système de détection de charge d'un pneu selon la revendication 1, caractérisé en ce qu'il comprend en outre un capteur de température (24) fournissant des données de température représentant une température ambiante détectée, l'unité de commande électronique (30) compensant les données de distance brutes sur la base des données de température.
  3. Système de détection de charge d'un pneu selon la revendication 1 ou 2, caractérisé en ce que l'au moins un capteur de distance (18a, 18b, 20a, 20b) comprend un capteur de distance à ultrasons monté en position adjacente au pneu correspondant (12a, 12b, 14a, 14b).
EP14170607.7A 2013-07-29 2014-05-30 Système de détection de charge de pneu d'un véhicule Active EP2832561B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/953,278 US9085203B2 (en) 2013-07-29 2013-07-29 Tire load sensing system

Publications (2)

Publication Number Publication Date
EP2832561A1 EP2832561A1 (fr) 2015-02-04
EP2832561B1 true EP2832561B1 (fr) 2016-04-06

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EP14170607.7A Active EP2832561B1 (fr) 2013-07-29 2014-05-30 Système de détection de charge de pneu d'un véhicule

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US (1) US9085203B2 (fr)
EP (1) EP2832561B1 (fr)
JP (1) JP2015028477A (fr)
BR (1) BR102014018258B1 (fr)
CA (1) CA2856911A1 (fr)
IN (1) IN2014MU01813A (fr)
MX (1) MX2014006911A (fr)

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WO2017183026A1 (fr) * 2016-04-17 2017-10-26 Clidro Ltd. Système et procédé de détection de charge automatique
GB2550174A (en) * 2016-05-11 2017-11-15 Airbus Operations Ltd Tyre deflection monitoring
DE102017208213A1 (de) * 2017-05-16 2018-11-22 Bayerische Motoren Werke Aktiengesellschaft Reifendruckregelsystem eines Fahrzeugs
EP3861288A1 (fr) 2018-10-02 2021-08-11 Pirelli Tyre S.p.A. Procédé et système pour estimer une distance résiduelle d'un véhicule
US10820474B2 (en) 2018-10-11 2020-11-03 Cnh Industrial Canada, Ltd. System for estimating field conditions and associated methods for adjusting operating parameters of an agricultural machine based on estimated field conditions
US11371847B2 (en) * 2018-12-28 2022-06-28 Uti Limited Partnership Sensor placement and methods for aiding navigation during GNSS signal outage
US11300440B2 (en) * 2019-11-14 2022-04-12 Blackberry Limited Method and system for determining the weight of a load on a chassis
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US12016257B2 (en) 2020-02-19 2024-06-25 Sabanto, Inc. Methods for detecting and clearing debris from planter gauge wheels, closing wheels and seed tubes
US11821781B2 (en) * 2020-07-20 2023-11-21 Progress Mfg. Llc Apparatus and method for determining weight distribution
DE102021106315A1 (de) * 2021-03-16 2022-09-22 Claas Selbstfahrende Erntemaschinen Gmbh Verfahren zur automatischen Reifeninnendruckregelung von Radreifen

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Also Published As

Publication number Publication date
CA2856911A1 (fr) 2015-01-29
IN2014MU01813A (fr) 2015-09-04
BR102014018258A2 (pt) 2015-09-29
JP2015028477A (ja) 2015-02-12
US9085203B2 (en) 2015-07-21
MX2014006911A (es) 2015-01-28
BR102014018258B1 (pt) 2021-10-05
EP2832561A1 (fr) 2015-02-04
US20150032287A1 (en) 2015-01-29

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